LTC1649CS

$13.38

Description：IC REG CTRLR BUCK 16SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:9b469384abc5 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

LTC1649CS is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Analog Devices Inc.. Its product description is IC REG CTRLR BUCK 16SOIC. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for LTC1649CS

Description：IC REG CTRLR BUCK 16SOIC
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：2.7V ~ 5V
Frequency - Switching：200kHz
Duty Cycle (Max)：93%
Synchronous Rectifier：Yes
Clock Sync：No
Serial Interfaces：-
Control Features：Current Limit, Enable, Soft Start
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.154", 3.90mm Width)
Supplier Device Package：16-SO

DC DC Switching Controllers datasheet and documents for LTC1649CS

LTC1649CS

DC DC Switching Controllers Overview

The LTC1649CS is a high-power, high-efficiency switching regulator controller optimized for very low supply voltages. It operates from 2.7V to 5V and functions as a step-down (buck) converter controller with a fixed 3.3V input requirement. The device utilizes a current mode architecture to ensure fast transient response and inherent line feed-forward compensation. It integrates an internal oscillator capable of frequencies up to 500kHz and includes comprehensive protection features such as cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown.

DC DC Switching Controllers Feature Summary

Current mode control architecture for rapid transient response
Integrated power switch driver for external MOSFETs
Fixed frequency operation up to 500kHz
Comprehensive protection including thermal shutdown and current limit

DC DC Switching Controllers Applications

Battery-powered portable equipment
Low voltage point-of-load regulation
Industrial control systems requiring efficient buck conversion
Communication infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (e.g., CS#PBF or CS#TR) against the required package type and reel quantity. Confirm lifecycle status as obsolete or limited supply through official Analog Devices channels before finalizing procurement plans. Ensure compatibility with external component selections for the intended switching frequency.

DC DC Switching Controllers Selection Notes

Select this controller when designing a synchronous or asynchronous buck converter requiring high efficiency at low input voltages. Consider the external MOSFET selection carefully to match the drive capability and switching losses associated with the chosen operating frequency. Evaluate thermal performance based on the expected load current and ambient conditions.

DC DC Switching Controllers Part Context

The LTC1649 belongs to Linear Technology's family of high-performance switching regulators. It is designed to replace discrete solutions in applications demanding compact size and high efficiency. The CS variant specifically denotes the commercial temperature range and SOIC-16 package configuration.